Add capture lists to Objective-C blocks
| Originator: | stephan.michels | ||
| Number: | rdar://17305330 | Date Originated: | 13-Jun-2014 08:32 PM |
| Status: | Open | Resolved: | |
| Product: | OS X SDK | Product Version: | Mac OS X 10.9.3 (13D65) |
| Classification: | Other Bug | Reproducible: | Always |
Add something like Swift’s capture lists to Objective-C blocks to prevent
instances to be capture by blocks and generate retain-cycles.
There exist “hacks” like @strongify and @weakify of libextobjc(http://github.com/jspahrsummers/libextobjc),
but this should be part of the compiler.
This could look like following code.
self.block = ^{
@weak self; // <- break retain-cycle
[self updateView];
};
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